JP2023171096A - absorbent pad - Google Patents

Abstract

To provide an absorbent pad used in conjunction with a wearable article, capable of facilitating attachment/detachment with respect to the wearable article, while suppressing generation of twisting on an absorbent core in a worn state.SOLUTION: An absorbent pad 1 comprises a body part 10 to be divided into a ventral part 101, a dorsal part 102, and a crotch part 103. The body part 10 includes a top sheet 11, a back sheet 12, and an absorbent core 13a. The back sheet 12 includes a plurality of joint parts 20 configured to be joined with a wearable article 2. The plurality of joint parts 20 include a ventral joint portion 21, a dorsal joint portion 22, and a crotch joint portion 23. In the longitudinal direction L, the ventral joint portion 21, the crotch joint portion 23, and the dorsal joint portion 22 are placed apart from each other. The plurality of joint parts 20 are so configured that joint in the crotch joint portion 23 is weaker than the joints in the ventral joint portion 21 and in the dorsal joint portion 22.SELECTED DRAWING: Figure 1

Description

The present disclosure relates to absorbent pads.

BACKGROUND ART Absorbent pads that are used by being attached to the inside of wearing articles such as cloth underwear are known. For example, in Patent Document 1, a wear article (outer cover) worn around the wearer's lower torso is attached to the inner surface (skin side) through hook and loop fasteners provided at both longitudinal ends of the outer cover. A configuration for attaching an absorbent pad (absorbent insert) is disclosed.

Special table 2013-534457 publication

As disclosed in Patent Document 1, in a method in which only the longitudinal ends of an absorbent pad are fixed (bonded) to a worn article, the absorbent pad is not caught between the wearer's crotch area when worn. This may cause the absorbent core arranged inside the absorbent pad to twist. As a result, urine leakage may occur more easily.

On the other hand, in order to avoid the occurrence of twisting of the absorbent core as described above, the entire back surface of the absorbent pad (the surface facing the inner surface of the worn article) is attached to the inner surface of the worn article with adhesive tape (such as double-sided tape). When an adhesion (bonding) method is adopted, it becomes difficult to attach the entire back surface of the absorbent pad to a wearing article without wrinkles. In other words, when a wearable article that is stretchable in the longitudinal direction is used, if an absorbent pad is attached to the wearable article while it is shrunk (unstretched) in the longitudinal direction, the relationship between the wearable article and the absorbent pad is There is a risk that misalignment or wrinkles may occur on the adhesive surface. Furthermore, if the adhesive area between the wearing article and the absorbent pad is large, the flexibility and wearing feeling of the wearing article will be impaired, and a large force will be required to remove (peel off) the absorbent pad from the wearing article.

Accordingly, one aspect of the present disclosure provides an absorbent pad that is used in combination with a wearing article, which can be easily attached to and taken off from the wearing article while suppressing the occurrence of twisting of the absorbent core in the worn state. The purpose is to provide.

An absorbent pad according to one aspect of the present disclosure is attached to a wear article that is a reusable cloth underwear worn around the lower torso of a wearer, and is an absorbent pad placed between the wear article and the wearer. The pad includes a ventral part located on the ventral side of the wearer in the worn state when worn by the wearer together with a wearing article, a dorsal part located on the dorsal side of the wearer in the worn state, and a ventral part. and a crotch area located between the back and the dorsal side, and a liquid-permeable surface sheet that faces the wearer's skin in the worn state, and a liquid-permeable surface sheet that faces the wearer's skin in the worn state, and the body part is divided into It has a liquid-impermeable back sheet facing the top sheet, and an absorbent core that is placed between the top sheet and the back sheet and absorbs the wearer's excrement, and the back sheet has an absorbent core that absorbs the wearer's excrement. The plurality of joint parts are a ventral joint part provided on the ventral side of the back sheet and a dorsal joint part provided on the dorsal side of the back sheet. and a crotch joint provided at the crotch part of the back sheet, and in the longitudinal direction, which is the direction in which the ventral part, the crotch part, and the dorsal part are lined up, the ventral joint part, the crotch joint part, and the dorsal joint part are arranged apart from each other, and the plurality of joint parts have a structure in which the joint at the crotch joint part is weaker than the joint at the ventral joint part and the joint at the dorsal joint part.

According to the present disclosure, it is an object of the present disclosure to provide an absorbent pad that is used in combination with a wearing article, and which can be easily attached to and taken off from the wearing article while suppressing the occurrence of twisting of the absorbent core in the worn state. Can be done.

FIG. 1 is a plan view of the absorbent pad according to the first embodiment, viewed from the skin side. FIG. 2 is a plan view of the absorbent pad according to the first embodiment, viewed from the non-skin side. FIG. 2 is a schematic diagram of the cross-sectional structure of the absorbent pad taken along line III-III in FIG. 1. FIG. FIG. 2 is a schematic diagram of the cross-sectional structure of the absorbent pad taken along the line IV-IV in FIG. 1. FIG. FIG. 2 is a plan view of the wearing article viewed from the skin side. FIG. 2 is a plan view of a wearing article equipped with an absorbent pad. FIG. 2 is a perspective view of a wearing article equipped with an absorbent pad. FIG. 7 is a plan view of an absorbent pad according to a modification of the first embodiment, viewed from the skin side. FIG. 7 is a plan view of an absorbent pad according to a second embodiment, viewed from the skin side. 10 is a schematic diagram of the cross-sectional structure of the absorbent pad taken along the line XX in FIG. 9. FIG. 9 is a schematic diagram of the cross-sectional structure of the absorbent pad taken along the line XI-XI in FIG. 8. FIG.

At least the following aspects 1 to 20 will become clear from the description of this specification and the accompanying drawings.

(Aspect 1)
An absorbent pad attached to a wearable article that is a reusable cloth underwear worn around the lower torso of a wearer and disposed between the wearable article and the wearer, the absorbent pad comprising:
A ventral part located on the ventral side of the wearer in the wearing state when worn by the wearer together with the wearing article, a dorsal part located on the dorsal side of the wearer in the wearing state, and the ventral part and a crotch portion located between the dorsal side portion, and a main body portion that is divided into:
The main body portion includes a liquid-permeable top sheet that faces the wearer's skin in the worn state, a liquid-impermeable back sheet that faces the worn article in the worn state, and the top sheet and the back surface. an absorbent core disposed between the sheet and the absorbent core that absorbs the wearer's excrement;
The back sheet is provided with a plurality of coupling parts configured to be able to be coupled with the wearing article,
The plurality of joint portions include a ventral joint portion provided on the ventral side portion, a dorsal joint portion provided on the dorsal side portion, and a crotch joint portion provided on the crotch portion. ,
In the longitudinal direction, which is the direction in which the abdominal part, the crotch part, and the dorsal part are lined up, the ventral joint part, the crotch joint part, and the dorsal joint part are arranged apart from each other. ,
The plurality of joints have a structure in which the joint at the crotch joint is weaker than the joint at the ventral joint and the joint at the dorsal joint.
absorbent pad.

In aspect 1, the joint portion is provided not only at both longitudinal ends (ventral side portion and dorsal side portion) but also at the crotch portion. As a result, when the absorbent pad is attached to the worn article (hereinafter referred to as the "attached state"), it is possible to suppress the positional shift of the absorbent pad with respect to the worn article, and also prevent the absorbent pad from getting caught in the wearer's groin area. It is possible to suppress the occurrence of In other words, if a crotch joint is not provided and the absorbent pad is separable from the worn article at the wearer's crotch area, only the absorbent pad will separate from the wearer's crotch area due to the wearer's movements. It may dig into the absorbent core and cause the absorbent core to twist. By connecting the absorbent pad to the worn article at the crotch joint, the above situation can be avoided.

Furthermore, wearing articles such as cloth underwear generally have the ability to shrink in the longitudinal direction. For this reason, if a bonding part (a part to be bonded to a worn article) is provided on the entire back side of the absorbent pad (for example, when the entire back side of the absorbent pad is glued to the worn article), the longitudinal It is difficult to attach an absorbent pad to a worn article that is contracted in the direction (hereinafter referred to as "contracted state"). That is, in order to properly attach an absorbent pad to a worn article, it is necessary to attach the absorbent pad with the worn article stretched in the longitudinal direction, but in this case, if the worn article is not fully stretched, There is a risk that wrinkles may form on the bonding surface (adhesive surface, etc.) between the absorbent pad and the worn article. Furthermore, since the area of the bonding surface is large, it is not easy to remove the absorbent pad from the worn article. On the other hand, in the above-mentioned absorbent pad, the joint parts located at both longitudinal ends (ventral part and dorsal part) and the crotch part are spaced apart from each other, so that the absorbent pad is in a contracted state. The absorbent pad can be easily attached to a worn article. Furthermore, compared to the case where the entire back surface of the absorbent pad is bonded to the wearing article as described above, the area of the bonding surface can be made smaller, so the absorbent pad can be easily removed from the wearing article.

Furthermore, in aspect 1, since the bond at the crotch joint has a structure that is weaker than the bonds at the ventral and dorsal joints, the absorbent pad can be easily attached to the crotch joint as described below. Can be done. That is, first, the ventral side joint part and the dorsal side joint part of the absorbent pad are connected to the worn article in a contracted state. At this time, due to the shrinkage of the wearable article in the longitudinal direction, there is a possibility that the crotch joining part is not joined to the appropriate position of the wearable article. Even in that case, by vigorously stretching the article that has been joined to the absorbent pad at the ventral and dorsal joints in the longitudinal direction, the binding between the absorbent pad and the article at the inseam joint can be temporarily removed. After detachment, the wearing article is sufficiently stretched in the longitudinal direction so that the inseam joint of the absorbent pad and the wearing article are in contact (i.e., the state where the inseam joining part faces the appropriate attachment position on the wearing article) When this happens, the crotch joint and the worn article can be rejoined.

As described above, according to aspect 1, it is possible to easily attach and detach the absorbent core to and from the worn article while suppressing the occurrence of twisting of the absorbent core in the worn state.

(Aspect 2)
the length in the longitudinal direction of a combined region of a first non-bonding region between the ventral joint portion and the crotch joint portion and a second non-bonding region between the dorsal joint portion and the crotch joint portion; The distance is at least half the distance between the ventral joint and the dorsal joint.
Absorbent pad according to aspect 1.

According to the second aspect, a sufficient size (longitudinal size) of the first non-bonding region and the second non-bonding region can be ensured between the ventral coupling portion and the dorsal coupling portion. As a result, it is possible to reduce the force required to stretch the wearable article in the longitudinal direction when attaching or detaching the absorbent pad to the wearable article as described above. Thereby, the absorbent pad can be attached to and detached from the worn article even more easily.

(Aspect 3)
The crotch joint is arranged such that the entire crotch joint overlaps the absorbent core when viewed from the thickness direction where the top sheet and the back sheet overlap.
The absorbent pad according to aspect 1 or aspect 2.

According to aspect 3, in the worn state, a relatively thick absorbent core is interposed between the wearer and the crotch joint. As a result, even if the crotch joint is made of a relatively hard member, it is possible to reduce the discomfort that the wearer feels when wearing the garment due to the crotch joint.

(Aspect 4)
The crotch joint has a first crotch joint and a second crotch joint,
The first crotch joint is located closer to the ventral side than the second crotch joint in the longitudinal direction.
The absorbent pad according to any one of aspects 1 to 3.

According to aspect 4, by configuring the crotch joint part with a plurality of joint parts (the first crotch joint part and the second crotch joint part), it is possible to prevent the absorbent pad from being caught in the wearer's crotch region when worn, and by extension It is possible to more effectively suppress the occurrence of twisting of the absorbent core.

(Aspect 5)
The first crotch joint is located closer to the ventral side than the center of the main body in the longitudinal direction,
The second crotch joint is located closer to the dorsal side than the center position,
Absorbent pad according to aspect 4.

According to aspect 5, by providing the first crotch joint part and the second crotch joint part so as to correspond to the urination opening and the defecation opening, the twisting of the absorbent core is prevented at a position close to the urination opening and the defecation opening. The occurrence can be suppressed. As a result, leakage of absorption of excrement can be suitably suppressed.

(Aspect 6)
The first crotch joint and the second crotch joint are arranged asymmetrically with respect to the central position,
Absorbent pad according to aspect 5.

(Aspect 7)
In the longitudinal direction, the distance from the first crotch joint to the center position is longer than the distance from the second crotch joint to the center position.
Absorbent pad according to aspect 6.
(Aspect 8)
In the longitudinal direction, the distance from the ventral joint to the first crotch joint is shorter than the distance from the second crotch joint to the dorsal joint.
The absorbent pad according to aspect 6 or aspect 7.

According to aspects 6, 7, and 8, the first crotch joint and the second crotch joint can be brought closer to positions corresponding to the urinary opening and the defecation opening. As a result, it is possible to effectively suppress the occurrence of twisting of the absorbent core at a position closer to the urinary opening and the defecation opening, and the leakage of absorption of excrement can be suppressed even more effectively.

(Aspect 9)
The bending resistance of a first portion of the main body portion that includes a portion that overlaps with the crotch joint portion and the crotch joint portion is greater than that of the portion of the main body portion that overlaps with the ventral joint portion The bending resistance is lower than the bending resistance of a second portion of the main body portion that overlaps with the dorsal joint portion and the third portion of the main body portion that overlaps with the dorsal joint portion.
The absorbent pad according to any one of aspects 1 to 8.

According to aspect 9, by making the bending resistance of the first part lower than the bending resistance of the second part and the third part, it is possible to flexibly deform the absorbent core in the first part together with the wearing article. become.

(Aspect 10)
The bending resistance of the crotch joint is lower than the bending resistance of the ventral joint and the dorsal joint.
Absorbent pad according to aspect 9.

According to aspect 10, by adjusting the bending resistance of the joint portion, the above-described configuration in which the bending resistance of the first portion is lower than the bending resistance of the second portion and the bending resistance of the third portion can be easily achieved. realizable.

(Aspect 11)
The main body portion is provided extending along the longitudinal direction from the ventral side portion to the dorsal side portion, and both ends in the longitudinal direction are fixed to the ventral side portion and the dorsal side portion, and It has leg side gathers configured to be able to stand up by contracting in the direction,
The outer ends of the ventral joint part and the dorsal joint part in the width direction perpendicular to the longitudinal direction are larger than the top of the leg side gathers in the stretched state in which the main body part is stretched in the longitudinal direction. Located on the outside in the width direction,
The absorbent pad according to any one of aspects 1 to 10.

According to aspect 11, by ensuring a sufficient length in the width direction of the ventral joint part and the dorsal joint part, the wearable article is absorbent at both ends in the longitudinal direction (ventral part and dorsal part). The sex pad can be more firmly fixed. If the outer ends of the ventral joint and the dorsal joint are located inside the top of the leg side gathers in the width direction, the longitudinal ends of the leg side gathers will not be joined to the worn article. Become. Therefore, when the absorbent pad is attached to a wearing article and stretched in the longitudinal direction, the elastic members of the leg side gathers are easily pulled inward in the longitudinal direction and contracted. As a result, there is a possibility that the leg side gathers may not stand up sufficiently or the stress of the leg side gathers may decrease. As a result, the function of the leg side gathers may deteriorate, and there is a possibility that lateral leakage of excrement (leakage from the leg openings) is likely to occur. According to aspect 11, unnecessary contraction of the leg side gathers in the longitudinal direction as described above can be suppressed, so that the occurrence of the above-mentioned problems can be suppressed.

(Aspect 12)
The main body portion is provided extending along the longitudinal direction from the ventral side portion to the dorsal side portion, and both ends in the longitudinal direction are fixed to the ventral side portion and the dorsal side portion, and It has leg side gathers configured to be able to stand up by contracting in the direction,
The leg side gathers have an upright fulcrum extending in the longitudinal direction,
The erecting fulcrum is located inside in the width direction from an end of the main body in the width direction perpendicular to the longitudinal direction in an extended state in which the main body is extended in the longitudinal direction,
The outer end portions of the ventral side joint portion and the dorsal side joint portion in the width direction are located on the outside of the erecting fulcrum in the width direction.
The absorbent pad according to any one of aspects 1 to 11.

According to aspect 12, by ensuring a sufficient length in the width direction of the ventral joint part and the dorsal joint part, the wearable article is absorbent at both ends in the longitudinal direction (ventral part and dorsal part). The sex pad can be more firmly fixed. In addition, by connecting the longitudinal end of the standing fulcrum of the leg side gathers (i.e., the portion that overlaps with the ventral joint and the dorsal joint) to the worn article, unnecessary contraction in the longitudinal direction of the leg side gathers can be prevented. Therefore, it is possible to suppress the occurrence of the problem described in the above aspect 11.

(Aspect 13)
The ventral side joint part and the dorsal side joint part are arranged on the outside in the longitudinal direction from the inner end part in the longitudinal direction of the region to which the leg side gathers are fixed.
The absorbent pad according to any one of aspects 1 to 12.

According to aspect 13, by arranging the ventral joint part and the dorsal joint part so as to straddle the erecting fulcrum, sufficient length in the width direction of the ventral joint part and the dorsal joint part is secured, and the ventral joint part and the dorsal joint part are arranged so as to straddle the fulcrum. It is possible to prevent the leg side gathers from being obstructed from standing up due to the joint portion and the dorsal joint portion. In addition, by connecting the outer side of the region where the leg side gathers are fixed in the longitudinal direction to the wearing article in the longitudinal direction, unnecessary contraction of the leg side gathers in the longitudinal direction can be suppressed. It is possible to suppress the occurrence of such problems.

(Aspect 14)
When the ventral side joint part and the dorsal joint part are viewed from the thickness direction where the top sheet and the back sheet overlap, the entire ventral joint part and the dorsal joint part are connected to the absorbent core. It is arranged so that it overlaps with
The absorbent pad according to any one of aspects 1 to 13.

According to aspect 14, in the worn state, a relatively thick absorbent core is interposed between the wearer and the ventral joint portion and the dorsal joint portion. As a result, even if the ventral joint part and the dorsal joint part are made of relatively hard members, it is possible to reduce the discomfort that the wearer feels when wearing the ventral joint part and the dorsal joint part. can.

(Aspect 15)
The ventral joint part and the dorsal joint part are arranged outside the absorbent core in the longitudinal direction.
The absorbent pad according to any one of aspects 1 to 13.

According to aspect 15, the frill part (the part of the main body part that is outside the absorbent core in the longitudinal direction) is fixed to the wearing article via the ventral joint part and the dorsal joint part, and the frill part can move freely. Since the movement of the frill portion is restricted, it is possible to suppress a decrease in the feeling of wearing caused by the free movement of the frill portion.

(Aspect 16)
Since the area of the crotch joint is smaller than the area of the ventral joint and the area of the dorsal joint, the crotch joint is smaller than the joint at the ventral joint and the joint at the dorsal joint. configured so that the bond at the joint is weak,
The absorbent pad according to any one of aspects 1 to 15.

According to aspect 16, by creating a difference in area between the crotch joint, the ventral joint, and the dorsal joint, the joint at the crotch joint is stronger than the joint at the ventral joint and the joint at the dorsal joint. Weak structures can be realized relatively easily.

(Aspect 17)
In the width direction perpendicular to the longitudinal direction, which is the direction in which the ventral side part, the crotch part, and the dorsal side part are lined up, the length of the crotch joint is equal to the length of the ventral joint and the dorsal joint. shorter than the length of the part,
The absorbent pad of aspect 16.

According to aspect 17, the structure of aspect 16 can be easily realized.

(Aspect 18)
By making the joining method of the crotch joint different from the joining method of the ventral joining portion and the joining method of the dorsal joining portion, the joining method of the crotch joining portion is made to be different from the joining method of the ventral joining portion and the joining method of the dorsal joining portion. configured so that the bond at the joint is weak,
The absorbent pad according to any one of aspects 1 to 17.

According to aspect 18, by differentiating the coupling method between the crotch joint, the ventral joint, and the dorsal joint, the joint at the crotch joint is stronger than the joint at the ventral joint and the joint at the dorsal joint. It is easy to realize a structure with a weak strength.

(Aspect 19)
The ventral side joint part and the dorsal side joint part are formed by a plurality of pins each having a claw part at the tip, and the crotch joint part is a raised member or an uneven structure configured to increase the contact area of the surface. is formed of a friction resistance member having a surface thereof, so that the connection at the crotch joint is weaker than the joint at the ventral joint and the joint at the dorsal joint.
The absorbent pad of aspect 18.

According to aspect 19, with a relatively simple structure, it is possible to create a suitable difference in bond strength between the ventral side bonding portion, the dorsal side bonding portion, and the crotch bonding portion.

(Aspect 20)
The crotch joint, the ventral joint, and the dorsal joint each have a plurality of pins each having a claw at a tip,
The joint structure of the crotch joint with respect to at least one of the number, height, material, and shape of the claws of the pins is different from the joint structure of the ventral joint and the dorsal joint. By this, the connection at the crotch joint is weaker than the joint at the ventral joint and the joint at the dorsal joint.
The absorbent pad according to any one of aspects 1 to 17.

According to aspect 20, by differentiating the connection structure of each connection part (ventral connection part, dorsal connection part, and crotch connection part) constituted by the hook material (a plurality of pins), the connection structure at the ventral connection part is made different. A structure in which the bond at the crotch joint is weaker than the bond at the joint and the dorsal joint can be easily realized.

[Embodiment]
Embodiments of the present disclosure will be described in detail below with reference to the drawings. In the following description, the same or equivalent elements will be denoted by the same reference numerals, and overlapping description will be omitted.

[First embodiment]
The structure of the absorbent pad 1 according to the first embodiment will be described with reference to FIGS. 1 to 4. FIG. 1 is a plan view of the absorbent pad 1 viewed from the skin side. FIG. 2 is a plan view of the absorbent pad 1 viewed from the non-skin side. 1 and 2 show a state in which the absorbent pad 1 is stretched to the point where no wrinkles are formed (hereinafter referred to as the "stretched state"). 3 and 4 are diagrams schematically showing the cross-sectional structure of the absorbent pad 1 along the III-III line and the IV-IV line in FIG. 1.

In this embodiment, the "wearer" is a person who wears the wearing article 2 to which the absorbent pad 1 is attached. The "skin side" is the side that faces the skin of the wearer when the absorbent pad 1 is worn by the wearer together with the wearing article 2 (hereinafter referred to as "wearing state"). The "non-skin side" is the side that faces away from the wearer's skin in the worn state.

In the following, the longitudinal direction of the absorbent pad 1 in the stretched state (see FIGS. 1 and 2) will be referred to as the "longitudinal direction L", and the lateral direction of the absorbent pad 1 perpendicular to the longitudinal direction L will be referred to as the "width direction W". The direction perpendicular to the longitudinal direction L and the width direction W is represented as the "thickness direction T" (see FIGS. 3 and 4). Further, a straight line passing through the center of the absorbent pad 1 in the longitudinal direction L and parallel to the width direction W is referred to as a "center line CL." The longitudinal direction L is a direction extending from the front side (ventral side) of the wearer's body to the back side (dorsal side) of the wearer's body in the worn state. The width direction W is a direction that coincides with the left-right direction of the wearer in the worn state. The thickness direction T is the direction in which materials (a top sheet 11, a back sheet 12, an absorbent core 13, etc., which will be described later) constituting the absorbent pad 1 are laminated.

The absorbent pad 1 is an absorbent article that is used together with a wearing article 2 (see FIGS. 5 and 6) that is worn around the lower torso of the wearer. The absorbent pad 1 is attached to a wearing article 2 and placed between the wearing article 2 and the wearer. The wearing article 2 is a reusable cloth underwear.

The absorbent pad 1 has a main body portion 10 . As shown in FIGS. 1 and 2, the main body portion 10 has a rectangular outer shape when viewed from the thickness direction T in the extended state. The main body part 10 includes a ventral part 101 located on the ventral side of the wearer in the worn state, a dorsal part 102 located on the dorsal side of the wearer in the worn state, and the ventral part 101 and the dorsal part 102. The crotch area 103 is located in between. The abdominal part 101, the crotch part 103, and the dorsal part 102 are lined up along the longitudinal direction L from the ventral side (front) to the dorsal side (backward) of the wearer. As an example, when the main body part 10 is divided into four equal parts in the longitudinal direction L, one region located most ventrally corresponds to the ventral part 101, and one region located most dorsally side corresponds to the ventral part 101. Two regions corresponding to the dorsal side part 102 and located between the ventral side part 101 and the dorsal side part 102 (that is, the central part in the longitudinal direction of the main body part 10) correspond to the crotch part 103.

The main body portion 10 includes a top sheet 11, a back sheet 12, and an absorbent core 13. Each member, such as the top sheet 11, the back sheet 12, and the absorber 13, may be bonded to each other using a known material such as an adhesive, for example.

The top sheet 11 is a liquid-permeable sheet that is placed on the wearer's skin side and faces the wearer's skin when worn. The top sheet 11 may be formed of, for example, a liquid-permeable nonwoven or woven fabric, a synthetic resin film having liquid-permeable holes, a composite sheet thereof, or the like.

The back sheet 12 is a liquid-impermeable sheet that is placed on the non-skin side of the wearer and faces the wearing article 2 in the worn state. The back sheet 12 may be formed of, for example, a liquid-impermeable nonwoven fabric, a synthetic resin film, or a composite sheet thereof. In this embodiment, the back sheet 12 includes a leak-proof sheet 12a and an exterior sheet 12b. The leak-proof sheet 12a is formed of a liquid-impermeable synthetic resin film. The exterior sheet 12b is formed of a liquid-impermeable nonwoven fabric, and is disposed outside the leak-proof sheet 12a.

The absorber 13 is arranged between the top sheet 11 and the leak-proof sheet 12a (back sheet 12). As shown in FIGS. 3 and 4, the absorbent body 13 includes an absorbent core 13a and a core wrap 13b that covers the absorbent core 13a. The absorbent core 13a is a member that absorbs the wearer's excrement, and has liquid absorbing and liquid retaining properties. The absorbent core 13a is, for example, a laminate of absorbent material comprising ground pulp or super absorbent polymer (SAP), or a mixture thereof. The core wrap 13b is, for example, tissue or a nonwoven fabric sheet.

As shown in FIG. 1, as an example in this embodiment, the absorbent core 13a is formed in a gourd shape (or hourglass shape) when viewed from the thickness direction T, and the absorbent core 13a has a gourd shape (or an hourglass shape). The center portion in the longitudinal direction L has a constricted shape. That is, the width (length in the width direction W) of the absorbent core 13a is maximum in a portion including both ends of the ventral side and the dorsal side, and in a portion including approximately the center portion in the longitudinal direction L of the absorbent core 13a. (In the present embodiment, it is the minimum at the ventral side of the crotch 103 with respect to the center line CL). Further, as shown in FIGS. 3 and 4, in this embodiment, as an example, the core wrap 13b has a constant width larger than the maximum width of the absorbent core 13a over the entire region along the longitudinal direction L. . That is, the core wrap 13b is formed in a rectangular shape that includes the absorbent core 13a when viewed from the thickness direction T.

A pair of leg side gathers 14 are provided on both sides of the main body portion 10 in the width direction W. The leg side gathers 14 extend along the longitudinal direction L from the ventral side part 101 to the dorsal side part 102. Both ends of the leg side gathers 14 in the longitudinal direction L are fixed at the ventral side part 101 and the dorsal side part 102. More specifically, fixed regions B (areas indicated by diagonal hatching in FIG. 1) are provided at both ends of the leg side gathers 14 in the longitudinal direction L, where the leg side gathers 14 and the top sheet 11 are fixed to each other. It is being The leg side gathers 14 and the top sheet 11 are fixed (adhered) to each other in the fixing region B by, for example, pasting with an adhesive, ultrasonic bonding, heat fusion using an embossing roll, or the like.

The leg side gathers 14 are configured to be able to stand up by contracting in the longitudinal direction L. More specifically, the leg side gathers 14 include an elastic member 15 extending along the longitudinal direction L between a pair of fixed regions B provided at both ends of the longitudinal direction L. As an example, the elastic member 15 is composed of one or more (three in this embodiment) rubber threads. The leg side gathers 14 can be erected by contraction of the elastic member 15 in the longitudinal direction L. In the worn state, the elastic member 15 contracts and the leg side gathers 14 stand up, thereby suppressing the leakage of excrement to the outside of the main body portion 10 (lateral leakage). That is, when the leg side gathers 14 are in the upright state, a leak-proof cuff is formed in the crotch portion 103 to prevent excrement from leaking to the outside along the surface of the top sheet 11.

FIG. 1 shows a state in which the leg side gathers 14 are folded inward in the width direction W. Therefore, in FIG. 1, the top portion 14a of the leg side gathers 14 is located inside the outer end portion of the main body portion 10 in the width direction W. In this embodiment, as shown in FIG. 3, both ends of the leak proof sheet 12a in the width direction W are sandwiched within the leg side gathers 14 and are integrated with the leg side gathers 14. Thereby, the outer end portion of the main body portion 10 in the width direction W is aligned with the upright fulcrum 14b of the leg side gathers 14. The upright fulcrum 14b is the base portion (bending starting point) of the rising portion of the leg side gathers 14, and extends in the longitudinal direction L.

The exterior sheet 12b (back sheet 12) is provided with a plurality of coupling portions 20 that are configured to be coupled to the wearing article 2. Note that "coupling" means being fixed to the wearing article 2 to the extent that it can be attached and detached, and includes various means such as engagement and adhesion. The coupling portion 20 may be configured by, for example, a region including a plurality of pins (hook structure) each having a claw portion at its tip. The plurality of joints 20 include a ventral joint 21 , a dorsal joint 22 , and a crotch joint 23 . The ventral side joint portion 21 is provided on the ventral side portion 101 of the exterior sheet 12b. The back joint portion 22 is provided on the back side portion 102 of the exterior sheet 12b. The crotch joint portion 23 is provided at the crotch portion 103 of the exterior sheet 12b. In the longitudinal direction L, the ventral joint 21, the crotch joint 23, and the back joint 22 are spaced apart from each other.

The plurality of joints 20 have a structure in which the joint at the crotch joint 23 is weaker than the joint at the ventral joint 21 and the joint at the dorsal joint 22 (hereinafter referred to as "specific joint structure"). In other words, when the absorbent pad 1 is coupled to the wearing article 2 via the plurality of coupling parts 20, the force required to release the coupling between the absorbent pad 1 and the wearing article 2 at the crotch coupling part 23 is The force is configured to be smaller than the force required to release the bond between the absorbent pad 1 and the wearing article 2 at the ventral side bonding portion 21 or the dorsal side bonding portion 22. A specific example of the configuration of the coupling section 20 will be described later.

As an example, the ventral joint part 21 and the dorsal joint part 22 have the same rectangular shape when viewed from the thickness direction T. The ventral side joint part 21 and the dorsal side joint part 22 are formed in a rectangular shape extending in the width direction W (that is, a rectangular shape whose length in the width direction W is longer than the length in the longitudinal direction L). The crotch joint 23 (in this embodiment, each of a first crotch joint 231 and a second crotch joint 232, which will be described later) is the ventral joint 21 and the dorsal joint when viewed from the thickness direction T. It has a rectangular shape smaller than 22. The crotch joint part 23 is also formed in a rectangular shape extending in the width direction W, similarly to the ventral joint part 21 and the dorsal joint part 22. As an example, the length of the crotch joint 23 in the longitudinal direction L matches the length of each of the ventral joint 21 and the dorsal joint 22 in the longitudinal direction L. On the other hand, the length of the crotch joint 23 in the width direction W is shorter than the length of each of the ventral joint 21 and the back joint 22 in the width direction W. The center positions of the ventral side joint part 21, the back side joint part 22, and the crotch joint part 23 in the width direction W coincide with the center position of the main body part 10 in the width direction W.

Next, the wearing article 2 to which the absorbent pad 1 is attached will be described with reference to FIGS. 5 to 7. FIG. 5 is a plan view of the wearing article 2 viewed from the skin side. FIG. 6 is a plan view of the wearing article 2 to which the absorbent pad 1 is attached. FIG. 7 is a perspective view of the wearing article 2 to which the absorbent pad 1 is attached.

As shown in FIG. 6, the wearing article 2 has a larger shape than the absorbent pad 1. The wearing article 2 has an inner surface 2a that faces the back surface (exterior sheet 12b) of the absorbent pad 1 in the worn state, and an outer surface 2b (see FIG. 7) opposite to the inner surface 2a. The wearing article 2 has a ventral part 201 located on the ventral side of the wearer in the worn state, a dorsal part 202 located on the dorsal side of the wearer in the worn state, and the ventral part 201 and the dorsal part 202. The crotch area 203 is located between the legs. The ventral part 201, the crotch part 203, and the dorsal part 202 are arranged along the longitudinal direction L from the ventral side to the dorsal side of the wearer. As an example, when the wearing article 2 is divided into four equal parts in the longitudinal direction L, one region located most ventral side corresponds to the ventral part 201, and one region located most dorsal side corresponds to the ventral part 201. Two regions corresponding to the dorsal side part 202 and located between the ventral side part 201 and the dorsal side part 202 (that is, the central part in the longitudinal direction of the main body part 10) correspond to the crotch part 203.

As shown in FIG. 6, in this embodiment, the absorbent pad 1 is attached to a substantially central portion of the wearing article 2 in the longitudinal direction L and the width direction W. As shown in FIG. More specifically, the inner surface 2a of the wearing article 2 is provided with a plurality of corresponding regions 30 corresponding to each of the plurality of joints 20 provided on the outer sheet 12b of the absorbent pad 1. Each corresponding region 30 is a region having a surface that can be coupled to each coupling portion 20. The plurality of corresponding regions 30 include a corresponding region 31 corresponding to the ventral joint 21, a corresponding region 32 corresponding to the dorsal joint 22, and a corresponding region 33 corresponding to the crotch joint 23 (in this embodiment, a corresponding region 33 corresponding to the crotch joint 23). A corresponding region 331 corresponding to the first crotch joint 231 and a corresponding region 332 corresponding to the second crotch joint 232 are provided. The absorbent pad 1 is attached to the wearing article 2 by coupling the plurality of coupling parts 20 to the corresponding plurality of corresponding regions 30, respectively.

Note that an area other than the compatible area 30 (non-compatible area) of the inner surface 2a may also be configured to be able to be combined with the joint part 20, but the compatible area 30 is more strongly combined with the joint part 20 than the non-compatible area. It is preferable that the configuration is such that In addition, from the viewpoint of convenience for the wearer who attaches the absorbent pad 1 to the wearable article 2, the compatible area 30 is designed in a manner that can be distinguished from the non-compatible area (for example, with a different material, color, etc.) from the non-compatible area. Preferably, the configuration is configured.

Fixing portions 2c are provided at both ends of the inner surface 2a of the back side portion 202 in the width direction W. The fixing portion 2c is constituted by, for example, a hook portion of a hook-and-loop fastener. Furthermore, fixing portions 2d corresponding to the fixing portions 2c are provided at both ends of the outer surface 2b of the abdominal portion 201 in the width direction W. The fixing portion 2d is configured by, for example, a loop portion of a hook-and-loop fastener. As shown in FIG. 7, in the worn state, each fixing part 2c is coupled to each fixing part 2d. As a result, the side edges in the width direction W of the entire area of the crotch area 203, a part of the ventral part 201 on the crotch part 203 side, and a part of the dorsal part 202 on the crotch part 203 side (range R in FIG. 5). The leg portion 2e is constituted by this.

The leg portion 2e is a portion that forms an opening through which the wearer's legs are passed in the worn state. An elastic member 2f that contracts along the leg portion 2e is provided in a portion along the leg portion 2e. Furthermore, an elastic member 2g that contracts in the width direction W so as to tighten the wearer's waist when worn is provided along the front end 201a of the abdominal part 201. An elastic member 2h that contracts in the width direction W so as to tighten the wearer's waist when worn is provided along the rear end 202a of the back side portion 202. The elastic members 2f, 2g, and 2h are, for example, rubber threads, elastic sheets, or the like.

[Operations and effects of the first embodiment]
In the absorbent pad 1, joint portions 20 (crotch joint portions 23) are provided not only at both ends in the longitudinal direction L (ventral side portion 101 and back side portion 102) but also at the crotch portion 103. As a result, in a state where the absorbent pad 1 is attached to the wearing article 2 (hereinafter referred to as the "attached state"), it is possible to suppress the positional shift of the absorbent pad 1 with respect to the wearing article 2, and the absorbent pad 1 is attached to the wearer. This can prevent it from being caught in the groin area of the person. That is, if the crotch joint 23 is not provided and the absorbent pad 1 is separable from the wearable article 2 at the wearer's crotch region, only the absorbent pad 1 will be worn by the wearer's movements. There is a risk that the absorbent core 13a may get stuck in the person's groin area, causing twisting of the absorbent core 13a. By connecting the absorbent pad 1 to the wearing article 2 at the crotch joint 23, the above situation can be avoided.

Further, the wearing article 2, which is cloth underwear, generally has the ability to shrink in the longitudinal direction L. In this embodiment, the elastic member 2f is provided along the leg portion 2e of the wearing article 2, so that the crotch portion 203 in particular is easily contracted in the longitudinal direction L. Therefore, if a joining part (a part to be joined to the wearing article 2) is provided on the entire back surface of the absorbent pad 1 (for example, when the entire back surface of the absorbent pad 1 is bonded to the wearing article 2), It is difficult to attach the absorbent pad 1 to the wearing article 2 which is in a state of being contracted in the longitudinal direction L (hereinafter referred to as "contracted state") in its natural state. That is, in order to properly attach the absorbent pad 1 to the wearing article 2, it is necessary to attach the absorbent pad 1 with the wearing article 2 stretched in the longitudinal direction L. If the absorbent pad 1 is not fully stretched, there is a possibility that wrinkles may be formed on the bonding surface (adhesive surface, etc.) between the absorbent pad 1 and the wearing article 2. Further, since the area of the bonding surface is large, it is not easy to remove the absorbent pad 1 from the wearing article 2. On the other hand, in the absorbent pad 1, the joint parts 20 arranged at both ends (ventral part 101 and dorsal part 102) in the longitudinal direction L and the crotch part 103 are arranged apart from each other. Therefore, the absorbent pad 1 can be easily attached to the wearing article 2 in the contracted state. Furthermore, compared to the case where the entire back surface of the absorbent pad 1 is bonded to the wearing article 2 as described above, the area of the bonding surface can be made smaller, so the absorbent pad 1 can be easily removed from the wearing article 2. becomes.

Furthermore, the absorbent pad 1 has a specific bonding structure (a structure in which the bonding in the crotch bonding portion 23 is weaker than the bonding in the ventral bonding portion 21 and the dorsal bonding portion 22). The ventral joint part 21 and the dorsal joint part 22 usually require relatively high binding strength (strength for joining with the wearing article 2). For example, when the wearing article 2 is moved together with the absorbent pad 1 in order to fit the wearing article 2 to the wearer's body, both ends of the absorbent pad 1 in the longitudinal direction L ( That is, the bonding strength of the ventral side joint part 21 and the dorsal side joint part 22 is set to such an extent that the part joined by the ventral side joint part 21 and the dorsal side joint part 22) does not come off from the wearing article 2. For this reason, if the same bonding force as the ventral coupling part 21 and the dorsal coupling part 22 is applied to the crotch coupling part 23, the absorbent pad 1 will be worn over the entire region of the ventral side, dorsal side, and crotch area. The absorbent pad 1 is strongly bonded to the article 2, making it difficult to remove the absorbent pad 1 from the article 2. On the other hand, in the wearing article 2, the plurality of joint parts 20 have the above-mentioned specific joint structure, so that the wearing article 2 and the absorbent pad 1 are firmly connected at the ventral joint part 21 and the dorsal joint part 22. The absorbent pad 1 can be easily removed from the wearing article 2 at the crotch joint 23 while being joined. Furthermore, the absorbent pad 1 can be easily attached to the crotch joint 23 as described below. That is, first, the ventral joint part 21 and the dorsal joint part 22 of the absorbent pad 1 are joined to the contracted wearing article 2 (corresponding region 31 and corresponding region 33). At this time, because the wearing article 2 is contracted in the longitudinal direction L, there is a possibility that the crotch joint portion 23 is not coupled to an appropriate position (corresponding area 33) of the wearing article 2. Even in that case, by vigorously stretching the wearing article 2 coupled to the absorbent pad 1 at the ventral coupling section 21 and the dorsal coupling section 22 in the longitudinal direction L, the absorbent pad 1 at the inseam coupling section 23 and After the connection with the wearing article 2 is once released, the wearing article 2 is sufficiently stretched in the longitudinal direction L and the crotch joint 23 and the wearing article 2 are in contact (i.e., the crotch joint 23 is in contact with the wearing article 2). The crotch joint 23 and the wearable article 2 can be joined together again when the wearable article 2 is in an appropriate attachment position (facing the corresponding area 33). As described above, the absorbent pad 1 can be easily attached to and detached from the wearing article 2 while suppressing the occurrence of twisting of the absorbent core in the worn state. The detailed configuration of each part of this embodiment and the effects obtained by the configuration will be described below.

As described above, the ventral joint 21, the crotch joint 23 (in this embodiment, the first crotch joint 231 and the second crotch joint 232), and the back joint 22 are spaced apart from each other in the longitudinal direction L. are doing. As a result, the joint 20 does not exist between the ventral joint 21 and the crotch joint 23 (in this embodiment, the first crotch joint 231 disposed on the ventral side of the crotch joint 23). A non-bonding region UR1 (first non-bonding region) is formed. Further, between the back side joint part 22 and the crotch joint part 23 (in this embodiment, the second crotch joint part 232 arranged on the back side of the crotch joint part 23), there is a non-joint part 20 between which the joint part 20 is not present. A bonding region UR2 (second non-bonding region) is formed. The length in the longitudinal direction L of the combined region of the non-binding region UR1 and the non-binding region UR2 (that is, "D1 + D2") is more than half the distance D between the ventral joint 21 and the dorsal joint 22. ing. That is, the plurality of coupling parts 20 are arranged so that "D1+D2>D/2" holds true. According to the above configuration, a sufficient size (size in the longitudinal direction L) of the non-bonding regions UR1 and UR2 can be ensured between the ventral joint portion 21 and the dorsal joint portion 22. As a result, the force required to stretch the wearing article 2 in the longitudinal direction L can be reduced when attaching or detaching the absorbent pad 1 to the wearing article 2 as described above. Thereby, the absorbent pad 1 can be attached to and detached from the wearing article 2 even more easily.

As shown in FIGS. 1 and 4, the crotch joint 23 (in this embodiment, each of the first crotch joint 231 and the second crotch joint 232) is the crotch joint 23 when viewed from the thickness direction T. The entire joint portion 23 is arranged so as to overlap the absorbent core 13a. That is, as shown in FIG. 4, the outer end 23a of the crotch joint 23 in the width direction W is arranged inside the outer end 13a1 of the absorbent core 13a in the width direction W. According to the above configuration, in the worn state, the relatively thick absorbent core 13a is interposed between the wearer and the crotch joint 23. As a result, even if the crotch joint 23 is made of a relatively hard member, it is possible to reduce the discomfort that the wearer feels due to the crotch joint 23 when wearing the wearer.

The crotch joint 23 includes a first crotch joint 231 and a second crotch joint 232 . The first crotch joint 231 is arranged closer to the abdominal part 101 than the second crotch joint 232 in the longitudinal direction L. According to the above configuration, by configuring the crotch joint part 23 with a plurality of joint parts (the first crotch joint part 231 and the second crotch joint part 232), the absorbent pad 1 is attached to the wearer's crotch region in the wearing state. It is possible to more effectively suppress the occurrence of pinching of the absorbent core 13a and, in turn, the twisting of the absorbent core 13a.

The first crotch joint part 231 is arranged closer to the abdominal part 101 than the center position of the main body part 10 in the longitudinal direction L (that is, the center line CL). On the other hand, the second crotch joint part 232 is arranged closer to the back side part 102 than the center line CL. In the worn state, the wearer's urinary opening is usually located in the crotch area 103 on the ventral side of the center line CL, and the wearer's defecation opening is located in the crotch area 103 on the dorsal side of the center line CL. Therefore, according to the above configuration, by providing the first crotch joint part 231 and the second crotch joint part 232 corresponding to the urinary opening and the defecation opening, the absorbent It is possible to suppress the occurrence of twisting of the core 13a. As a result, leakage of absorption of excrement can be suitably suppressed.

The first crotch joint 231 and the second crotch joint 232 are arranged asymmetrically with respect to the center line CL. In other words, when the main body portion 10 is folded in half along the center line CL, the first crotch joint portion 231 and the second crotch joint portion 232 are arranged so as not to completely overlap. More specifically, as shown in FIG. 2, in the longitudinal direction L, the distance D3 from the first crotch joint 231 to the center line CL is longer than the distance D4 from the second crotch joint 232 to the center line CL. It's also getting longer. In other words, the first crotch joint 231 located on the ventral side is located farther from the center line CL than the second crotch joint 232 located on the back. Further, in the longitudinal direction L, the distance D1 from the ventral joint 21 to the first crotch joint 231 is shorter than the distance D2 from the second crotch joint 232 to the back joint 22. Normally, in the worn state, the position of the crotch 103 facing the wearer's urinary opening is farther from the center line CL than the position of the crotch 103 facing the wearer's defecation opening. In other words, the distance from the center line CL to the position corresponding to the urinary opening (position ventral to the center line CL) is from the center line CL to the position corresponding to the defecation opening (position dorsal to the central line CL). greater than the distance. Therefore, according to the above configuration, the first crotch joint 231 and the second crotch joint 232 can be brought closer to the positions corresponding to the urinary opening and the defecation opening. As a result, it is possible to effectively suppress the occurrence of twisting of the absorbent core 13a at a position closer to the urinary opening and the defecation opening, and the leakage of absorption of excrement can be suppressed even more effectively.

The bending resistance of the first portion of the main body 10 that is made up of the part that overlaps with the crotch joint 23 and the crotch joint 23 is the same as that of the part of the main body 10 that overlaps with the ventral joint 21 and the crotch joint 21. and the bending resistance of the third portion, which is made up of the portion of the main body portion 10 that overlaps with the dorsal joint portion 22 and the dorsal joint portion 22. . The above-mentioned "bending resistance" is a value measured by, for example, a cantilever method. Since the absorbent core 13a disposed in the first part of the main body part 10 is the part facing the wearer's crotch area, it can be flexibly deformed together with the wearable article 2 according to the wearer's movements when wearing the absorbent core 13a. Desired. According to the above configuration, by making the bending resistance of the first part lower than the bending resistance of the second part and the third part, the absorbent core 13a in the first part becomes flexible together with the wearing article 2. It becomes possible to transform it.

In this embodiment, the bending resistance of the crotch joint 23 itself is lower than the bending resistance of the ventral joint 21 itself and the back joint 22 itself. According to the above configuration, by adjusting the bending resistance of the coupling portion 20, it is easy to achieve a configuration in which the bending resistance of the first portion is lower than the bending resistance of the second portion and the bending resistance of the third portion. can be realized.

As shown in FIGS. 1 and 3, the outer end portion 21a of the ventral joint portion 21 in the width direction W is in an extended state where the main body portion 10 is extended in the longitudinal direction L (that is, when the leg side gathers 14 are folded). (state), the leg side gathers 14 are located on the outer side in the width direction W than the top 14a of the leg side gathers 14. Similarly, the outer end portion 22a of the back joint portion 22 in the width direction W is also located on the outer side in the width direction W than the top portion 14a of the leg side gathers 14 in the extended state. According to the above configuration, by ensuring a sufficient length in the width direction W of the ventral joint part 21 and the dorsal joint part 22, at both ends in the longitudinal direction L (ventral part 101 and dorsal part 102). The absorbent pad 1 can be more firmly fixed to the wearing article 2. If the outer ends 21a and 22a of the ventral side joint part 21 and the dorsal side joint part 22 are located inside the top part 14a of the leg side gathers 14 in the width direction W, the lengthwise direction L of the leg side gathers 14 The end portion will not be combined with the wearing article 2. Therefore, when the absorbent pad 1 is attached to the wearing article 2 and stretched in the longitudinal direction L, the elastic members 15 of the leg side gathers 14 are easily pulled inward in the longitudinal direction L and contracted. Thereby, there is a possibility that the leg side gathers 14 may not stand up sufficiently or the stress of the leg side gathers 14 may decrease. As a result, the function of the leg side gathers 14 deteriorates, and there is a possibility that lateral leakage of excrement (leakage from the leg part) becomes more likely to occur. According to the above configuration (that is, the configuration in which the outer ends 21a and 22a of the ventral joint part 21 and the dorsal joint part 22 are located outside the top part 14a of the leg side gathers 14 in the width direction W), as described above. Since unnecessary contraction of the leg side gathers 14 in the longitudinal direction L can be suppressed, the occurrence of the above-mentioned problems can be suppressed.

As shown in FIGS. 1 and 3, the ventral joint portion 21 is arranged so that the entire ventral joint portion 21 overlaps the absorbent core 13a when viewed from the thickness direction T. That is, the ventral joint portion 21 is disposed inside (on the center line CL side) of the outer end (front end 13a2) of the absorbent core 13a in the longitudinal direction L. Further, as shown in FIG. 3, the outer end 21a of the ventral joint portion 21 in the width direction W is arranged inside the outer end 13a1 of the absorbent core 13a in the width direction W. Similarly, the back joint portion 22 is also arranged so that the entire back joint portion 22 overlaps the absorbent core 13a when viewed from the thickness direction T. That is, the back joint portion 22 is arranged inside (on the center line CL side) the outer end (rear end 13a3) of the absorbent core 13a in the longitudinal direction L. Further, the outer end 22a of the back joint portion 22 in the width direction W is arranged inside the outer end 13a1 of the absorbent core 13a in the width direction W. According to the above configuration, in the worn state, the relatively thick absorbent core 13a is interposed between the wearer and the ventral joint portion 21 and the dorsal joint portion 22. As a result, even if the ventral joint part 21 and the dorsal joint part 22 are made of relatively hard members, the uncomfortable feeling that the wearer feels when wearing the ventral joint part 21 and the dorsal joint part 22 can be reduced. can be reduced.

Next, the structure of the coupling portion 20 will be explained in detail. The structure of the coupling portion 20 (that is, the coupling means and method employed for coupling the absorbent pad 1 and the wearing article 2) is not limited to a specific structure. Further, the corresponding region 30 of the wearing article 2 corresponding to the joint portion 20 may be provided with a structure corresponding to the structure of the joint portion 20 . Some specific examples of the coupling portion 20 are listed below.

As a first example, the coupling portion 20 may be formed of a hook material (for example, a so-called hook portion of a hook-and-loop fastener) including a plurality of pins having claw portions at the tip portions. In this case, the corresponding region 30 may be configured by a member (for example, a so-called loop portion of a hook-and-loop fastener) to which the hook material is coupled (engaged).

As a second example, the coupling part 20 may be formed of an adhesive structure. The adhesive structure may be constituted by, for example, an adhesive surface provided with an adhesive material such as hot melt adhesive (HMA) on the surface.

As a third example, the coupling portion 20 may be formed of a member having magnetic force (for example, a magnet). The corresponding region 30 may be provided with a magnetic material or the like that attracts the coupling portion 20 to each other by magnetic force.

As a fourth example, the coupling portion 20 may be formed by one member (a convex portion or a concave portion) of a snap button. The corresponding region 30 may be provided with the other member (a recess or a convex portion) of the snap button.

As a fifth example, the coupling portion 20 may be formed of a frictional resistance member that is engaged with the wearing article 2 using frictional resistance. Examples of the frictional resistance member include a raised material configured to increase the contact area or a member having an uneven structure on its surface. Specific examples of the friction resistance member include materials made of NanoFront (registered trademark).

As a sixth example, the coupling part 20 may be formed of a rubber material. For example, the coupling portion 20 may be formed of super strong double-sided tape, rubber anti-slip, or the like.

Next, several configuration examples for realizing the above-mentioned specific coupling structure will be described.

(First configuration example)
A specific joint structure may be realized by making the area of the crotch joint 23 smaller than the area of the ventral joint 21 and the area of the dorsal joint 22. Here, the area of the crotch joint 23 refers to the area of the crotch joint 23 when the crotch joint 23 is composed of a plurality of joints (the first crotch joint 231 and the second crotch joint 232) as in this embodiment. , means the individual areas of the plurality of joints. That is, in this embodiment, each of the first crotch joint part 231 and the second crotch joint part 232 is configured to have a smaller area than the area of each of the ventral joint part 21 and the dorsal joint part 22. By this, a specific bonding structure is realized. According to the first configuration example, by creating a difference in area between the crotch joint 23, the ventral joint 21, and the dorsal joint 22, the specific joint structure can be realized relatively easily.

As a specific implementation method of the first configuration example, in the width direction W, the length of the crotch joint part 23 may be made shorter than the length of the ventral joint part 21 and the length of the back joint part 22. According to the above configuration, the structure of the first configuration example can be easily realized. In addition, the width of the crotch joint 23 disposed in the crotch 103 (length in the width direction W) is set to be larger than the width of the joints at both ends in the longitudinal direction L (the ventral joint 21 and the dorsal joint 22). By making it shorter, it is possible to suppress the uncomfortable feeling that the wearer feels when wearing due to the crotch joint 23 in the worn state.

(Second configuration example)
When the first example described above is adopted as the structure of the joint part 20, the joint structure regarding at least one of the number of pins, height, material, and shape of the claw part of the crotch joint part 23 is changed to the joint structure of the ventral joint part 21. By making the structure different from that of the dorsal coupling portion 22, a specific coupling structure may be realized. Some examples of methods for making the joint structures different between the crotch joint 23, the ventral joint 21, and the dorsal joint 22 as described above are shown below. For example, the height of the pins of the ventral side joint part 21 and the dorsal side joint part 22 may be higher than the height of the pin of the crotch joint part 23. Further, the number of pins in the ventral side joint part 21 and the dorsal side joint part 22 may be greater than the number of pins in the crotch joint part 23. Furthermore, depending on the combination of the number, height, material, and shape of the claw portions of the pins described above, the bonding strength of the crotch bonding portion 23 may be made higher than that of the ventral bonding portion 21 and the dorsal bonding portion 22. good. According to the above configuration, by making the coupling structures of the respective coupling parts 20 (ventral coupling part 21, dorsal coupling part 22, and crotch coupling part 23) made of hook materials different, it is possible to easily create a specific coupling structure. realizable.

(Third configuration example)
When the second example is adopted as the structure of the joint part 20, for example, the coating weight, coating area, and coating area of the adhesive material may be changed between the crotch joint part 23, the ventral joint part 21, and the dorsal joint part 22. A specific bonding structure may be realized by changing the working pattern or the like.

(Fourth configuration example)
When the third example described above is adopted as the structure of the joint part 20, for example, the magnetic force, area, etc. of the members having magnetic force may be made different between the crotch joint part 23, the ventral joint part 21, and the dorsal joint part 22. By this, a specific bonding structure may be realized.

(Fifth configuration example)
When the fourth example is adopted as the structure of the joint part 20, for example, the number of buttons arranged, the area, etc. are made different between the crotch joint part 23, the ventral joint part 21, and the dorsal joint part 22. By this, a specific bonding structure may be realized.

(Sixth configuration example)
By making the joining method of the crotch joining portion 23 (for example, the method corresponding to each of the first to sixth examples described above) different from the joining method of the ventral joining portion 21 and the joining method of the dorsal joining portion 22, Specific bonding structures may be implemented. According to the above configuration, by making the coupling methods different between the crotch coupling part 23, the ventral coupling part 21, and the dorsal coupling part 22, a specific coupling structure can be easily realized.

As a specific example of the sixth configuration example, the following configuration example is given. That is, even if the specific joint structure is realized by adopting the first example as the structure of the ventral joint part 21 and the dorsal joint part 22 and adopting the fifth example as the structure of the crotch joint part 23, good. According to the above configuration, a suitable difference in bonding strength can be created between the ventral side connecting portion 21, the dorsal side connecting portion 22, and the crotch connecting portion 23 with a relatively simple structure.

[Modification of the first embodiment]
FIG. 8 is a plan view of an absorbent pad 1A according to a modification of the first embodiment, viewed from the skin side. As shown in FIG. 8, the absorbent pad 1A differs from the absorbent pad 1 in that it is configured as follows, and is similar to the absorbent pad 1 in other configurations. In the absorbent pad 1A, the ventral joint part 21 and the dorsal joint part 22 are arranged outside the absorbent core 13a in the longitudinal direction L. More specifically, the ventral joint portion 21 is located forward of the front end portion 13a2 of the absorbent core 13a. Further, the back joint portion 22 is disposed further rearward than the rear end portion 13a3 of the absorbent core 13a.

According to the absorbent pad 1A, the ventral joint part 21 and the dorsal joint part 22 can be arranged as close as possible to both ends of the main body part 10 in the longitudinal direction L. Thereby, both ends of the absorbent pad 1 in the longitudinal direction L can be easily attached to the wearing article 2. Further, a portion of the main body portion 10 that is outside the absorbent core 13a in the longitudinal direction L may be formed in a frill shape. In this case, when the ventral joint part 21 and the dorsal joint part 22 are arranged on the absorbent core 13a as in the first embodiment (absorbent pad 1), the outer part formed in a frill shape as described above (the frill portion) is not coupled (fixed) to the wearing article 2 and can move freely. As a result, the frill portion may rub against the wearer's skin, causing the wearer to experience itching, which may impair the feeling of wearing the wearer. On the other hand, according to the absorbent pad 1A, the frill part is fixed to the wearing article 2 via the ventral joint part 21 and the dorsal joint part 22, and the free movement of the frill part is restricted. As shown in the figure, it is possible to suppress a decrease in the feeling of wearing caused by the free movement of the frill portion.

[Second embodiment]
The structure of an absorbent pad 1B according to the second embodiment will be described with reference to FIGS. 9 to 11. FIG. 9 is a plan view of the absorbent pad 1B viewed from the skin side. 10 and 11 are diagrams schematically showing the cross-sectional structure of the absorbent pad 1B taken along the XX line and the XI-XI line in FIG. 9.

The absorbent pad 1B is different from the absorbent pad 1 in that it is configured as follows, and is similar to the absorbent pad 1 in other configurations. In the absorbent pad 1B, the standing fulcrum 14b of the leg side gathers 14 is located inside the end of the main body 10 in the width direction W in the stretched state. More specifically, the leg gathers 16 are provided outside the upright fulcrum 14b in the width direction W. The leg gathers 16 are provided outside the leg side gathers 14 with the standing fulcrum 14b in between, and extend along the longitudinal direction L from the ventral part 101 to the dorsal part 102. As shown in FIGS. 10 and 11, the upright fulcrum 14b is constituted by an adhesive portion that adheres the top sheet 11 and the sheet members that constitute the leg side gathers 14 and the leg gathers 16.

The leg gathers 16 have an elastic member 17 extending along the longitudinal direction L. As an example, the elastic member 17 is made of one or more (in this embodiment, one) rubber thread. The leg gathers 16 can be contracted by the elastic member 17 contracting in the longitudinal direction L. In the absorbent pad 1B, the outer end portion 16a of the leg gathers 16 is the outer end portion of the main body portion 10 in the width direction W. As described above, in the absorbent pad 1B, the standing fulcrum 14b of the leg side gathers 14 is located on the inner side in the width direction W than the end (outer end 16a) of the main body 10 in the width direction W in the stretched state. ing.

As shown in FIGS. 9 and 10, in the absorbent pad 1B, the outer ends 21a and 22a of the ventral joint part 21 and the dorsal joint part 22 in the width direction W are closer to the upright fulcrum 14b of the leg side gathers 14. is also located on the outside in the width direction W. That is, the ventral side joint part 21 and the dorsal side joint part 22 are arranged so as to straddle the standing fulcrum 14b. According to the above configuration, by ensuring a sufficient length in the width direction W of the ventral joint part 21 and the dorsal joint part 22, at both ends in the longitudinal direction L (ventral part 101 and dorsal part 102). The absorbent pad 1 can be more firmly fixed to the wearing article 2. In addition, by connecting the end of the leg side gathers 14 in the longitudinal direction L of the standing fulcrum 14b (that is, the portion that overlaps with the ventral side joint part 21 and the dorsal side joint part 22) to the wearing article 2, the leg side gathers 14 can be Since unnecessary contraction in the longitudinal direction L can be suppressed, it is possible to suppress the problems described above, that is, the occurrence of side leakage of excrement (leakage from the leg part) due to a decline in the function of the leg side gathers 14. can.

As shown in FIG. 9, the ventral joint part 21 and the dorsal joint part 22 are arranged on the outer side in the longitudinal direction L than the inner end Ba in the longitudinal direction L of the fixing region B to which the leg side gathers 14 are fixed. has been done. In other words, when viewed from the thickness direction T, the ventral joint part 21 and the dorsal joint part 22 overlap with the part of the leg side gathers 14 that is not fixed to the top sheet 11 (that is, the part that can stand up). It is arranged so that it does not occur. If the joint part 20 (ventral joint part 21 or dorsal joint part 22) is placed between the inner ends Ba of a pair of fixed regions B facing each other in the longitudinal direction L while straddling the standing fulcrum 14b, the standing fulcrum In the portion of the leg side gathers 14 b that overlaps with the joint 20 , the joint 20 impedes the standing motion of the leg side gathers 14 (that is, the bending motion at the standing fulcrum 14 b ). On the other hand, according to the above-mentioned structure of the absorbent pad 1B, by arranging the ventral joint part 21 and the dorsal joint part 22 so as to straddle the upright fulcrum 14b, the ventral joint part 21 and the dorsal joint part 22 are While ensuring a sufficient length of the leg side gathers 22 in the width direction W, it is possible to prevent the ventral joint portion 21 and the dorsal joint portion 22 from hindering the leg side gathers 14 from standing up. Further, by joining the outer side in the longitudinal direction L of the fixing region B to which the leg side gathers 14 is fixed to the wearing article 2 in the longitudinal direction L, unnecessary contraction of the leg side gathers 14 in the longitudinal direction L can be suppressed. Therefore, the above-mentioned problem, that is, the occurrence of side leakage of excrement (leakage from the leg portion) due to a decline in the function of the leg side gathers 14 can be suppressed.

[Modified example]
Although the embodiments of the present disclosure have been described above, the present disclosure is not limited to the above embodiments. The materials and shapes of each structure are not limited to the materials and shapes described above, but various materials and shapes can be employed. Further, some of the configurations included in the configurations of the embodiments described above may be changed or omitted, or other configurations may be added.

The number, shape, and arrangement of the plurality of coupling parts 20 are not limited to those in the above embodiment. For example, each coupling portion 20 may be composed of a plurality of parts separated in the width direction W. Further, in the above embodiment, the crotch joint 23 is composed of two joints 20 (the first crotch joint 231 and the second crotch joint 232), but for example, one crotch joint 23 is arranged along the center line CL. It may be configured by two coupling parts 20. Further, in the above embodiment, the lengths in the longitudinal direction L of each of the coupling parts 20 are the same, but the lengths in the longitudinal direction L of the coupling parts 20 may be different between the coupling parts 20.

In the above embodiment, the wearing article 2 is a tape-type cloth underwear, but the wearing article 2 may be a pants-type cloth underwear.

In the above embodiment, the inner surface 2a of the wearing article 2 is provided with the corresponding region 30 corresponding to each coupling portion 20, but when the inner surface 2a is formed of a material that can be coupled to each coupling portion 20, , the corresponding area 30 may be omitted.

DESCRIPTION OF SYMBOLS 1, 1A, 1B... Absorbent pad, 2... Wearing article, 10... Main body, 11... Top sheet, 12... Back sheet, 13a... Absorbent core, 14... Leg side gathers, 14a... Top, 14b... Standing fulcrum , 20... Joint part, 21... Ventral joint part, 22... Dorsal joint part, 23... Crotch joint part, 101... Ventral part, 102... Dorsal part, 103... Crotch part, 231... First crotch joint part , 232...Second crotch joint, Ba...Inner end, L...Longitudinal direction, T...Thickness direction, UR1...Non-bond area (first non-bond area), UR2...Non-bond area (second non-bond area) ), W...width direction.

Claims (20)

An absorbent pad attached to a wearable article that is a reusable cloth underwear worn around the lower torso of a wearer and disposed between the wearable article and the wearer, the absorbent pad comprising:
A ventral part located on the ventral side of the wearer in the wearing state when worn by the wearer together with the wearing article, a dorsal part located on the dorsal side of the wearer in the wearing state, and the ventral part and a crotch portion located between the dorsal side portion, and a main body portion that is divided into:
The main body portion includes a liquid-permeable top sheet that faces the wearer's skin in the worn state, a liquid-impermeable back sheet that faces the worn article in the worn state, and the top sheet and the back surface. an absorbent core disposed between the sheet and the absorbent core that absorbs the wearer's excrement;
The back sheet is provided with a plurality of coupling parts configured to be able to be coupled with the wearing article,
The plurality of joint portions include a ventral joint portion provided on the ventral side portion, a dorsal joint portion provided on the dorsal side portion, and a crotch joint portion provided on the crotch portion. ,
In the longitudinal direction, which is the direction in which the abdominal part, the crotch part, and the dorsal part are lined up, the ventral joint part, the crotch joint part, and the dorsal joint part are arranged apart from each other. ,
The plurality of joints have a structure in which the joint at the crotch joint is weaker than the joint at the ventral joint and the joint at the dorsal joint.
absorbent pad. the length in the longitudinal direction of a combined region of a first non-bonding region between the ventral joint portion and the crotch joint portion and a second non-bonding region between the dorsal joint portion and the crotch joint portion; The distance is at least half the distance between the ventral joint and the dorsal joint.
The absorbent pad according to claim 1. The crotch joint is arranged such that the entire crotch joint overlaps the absorbent core when viewed from the thickness direction where the top sheet and the back sheet overlap.
The absorbent pad according to claim 1. The crotch joint has a first crotch joint and a second crotch joint,
The first crotch joint is located closer to the ventral side than the second crotch joint in the longitudinal direction.
The absorbent pad according to claim 1. The first crotch joint is located closer to the ventral side than the center of the main body in the longitudinal direction,
The second crotch joint is located closer to the dorsal side than the center position,
The absorbent pad according to claim 4. The first crotch joint and the second crotch joint are arranged asymmetrically with respect to the central position,
The absorbent pad according to claim 5. In the longitudinal direction, the distance from the first crotch joint to the center position is longer than the distance from the second crotch joint to the center position.
The absorbent pad according to claim 6. In the longitudinal direction, the distance from the ventral joint to the first crotch joint is shorter than the distance from the second crotch joint to the dorsal joint.
The absorbent pad according to claim 6. The bending resistance of a first portion of the main body portion that includes a portion that overlaps with the crotch joint portion and the crotch joint portion is greater than that of the portion of the main body portion that overlaps with the ventral joint portion The bending resistance is lower than the bending resistance of a second portion of the main body portion that overlaps with the dorsal joint portion and the third portion of the main body portion that overlaps with the dorsal joint portion.
The absorbent pad according to claim 1. The bending resistance of the crotch joint is lower than the bending resistance of the ventral joint and the dorsal joint.
The absorbent pad according to claim 9. The main body portion is provided extending along the longitudinal direction from the ventral side portion to the dorsal side portion, and both ends in the longitudinal direction are fixed to the ventral side portion and the dorsal side portion, and It has leg side gathers configured to be able to stand up by contracting in the direction,
The outer ends of the ventral joint part and the dorsal joint part in the width direction perpendicular to the longitudinal direction are larger than the top of the leg side gathers in the stretched state in which the main body part is stretched in the longitudinal direction. Located on the outside in the width direction,
The absorbent pad according to claim 1. The main body portion is provided extending along the longitudinal direction from the ventral side portion to the dorsal side portion, and both ends in the longitudinal direction are fixed to the ventral side portion and the dorsal side portion, and It has leg side gathers configured to be able to stand up by contracting in the direction,
The leg side gathers have an upright fulcrum extending in the longitudinal direction,
The erecting fulcrum is located inside in the width direction from an end of the main body in the width direction perpendicular to the longitudinal direction in an extended state in which the main body is extended in the longitudinal direction,
The outer end portions of the ventral side joint portion and the dorsal side joint portion in the width direction are located on the outside of the erecting fulcrum in the width direction.
The absorbent pad according to claim 1. The ventral side joint part and the dorsal side joint part are arranged on the outside in the longitudinal direction from the inner end part in the longitudinal direction of the region to which the leg side gathers are fixed.
The absorbent pad according to claim 12. When the ventral side joint part and the dorsal joint part are viewed from the thickness direction where the top sheet and the back sheet overlap, the entire ventral joint part and the dorsal joint part are connected to the absorbent core. It is arranged so that it overlaps with
The absorbent pad according to claim 1. The ventral joint part and the dorsal joint part are arranged outside the absorbent core in the longitudinal direction.
The absorbent pad according to claim 1. Since the area of the crotch joint is smaller than the area of the ventral joint and the area of the dorsal joint, the crotch joint is smaller than the joint at the ventral joint and the joint at the dorsal joint. configured so that the bond at the joint is weak,
The absorbent pad according to claim 1. In the width direction perpendicular to the longitudinal direction, which is the direction in which the ventral side part, the crotch part, and the dorsal side part are lined up, the length of the crotch joint is equal to the length of the ventral joint and the dorsal joint. shorter than the length of the part,
17. The absorbent pad of claim 16. By making the joining method of the crotch joint different from the joining method of the ventral joining portion and the joining method of the dorsal joining portion, the joining method of the crotch joining portion is made to be different from the joining method of the ventral joining portion and the joining method of the dorsal joining portion. configured so that the bond at the joint is weak,
The absorbent pad according to claim 1. The ventral side joint part and the dorsal side joint part are formed by a plurality of pins each having a claw part at the tip, and the crotch joint part is a raised member or an uneven structure configured to increase the contact area of the surface. is formed of a friction resistance member having a surface thereof, so that the connection at the crotch joint is weaker than the joint at the ventral joint and the joint at the dorsal joint.
The absorbent pad of claim 18. The crotch joint, the ventral joint, and the dorsal joint each have a plurality of pins each having a claw at a tip,
The joint structure of the crotch joint with respect to at least one of the number, height, material, and shape of the claws of the pins is different from the joint structure of the ventral joint and the dorsal joint. By this, the connection at the crotch joint is weaker than the joint at the ventral joint and the joint at the dorsal joint.
The absorbent pad according to claim 1.

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